【作者】 熊利霞； 李建中； 孔繁祚；

【Author】 XIONG Lixia LI Jianzhong KONG Fanzuo (Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085)

【机构】 中国科学院生态环境研究中心生物农药室；

【摘要】 本文对采自南戴河和天津大港地区的海水和海泥样品进行了分离和纯化,得到了313株菌落。经抗卤虫(Artemia Salina)活性的初筛,得到了40个具有杀卤虫活性的菌株。对其中三株具有强烈杀卤虫活性的菌株进行了棉铃虫(Helicoverpa armigera)室内生测,结果发现其中L173具有很好的杀棉铃虫活性。实验表明,海洋微生物是杀虫抗生素的新来源。更多还原

【Abstract】 Screening of strains isolated from sea water and sea sediments of Beidiahe and Da-gang of China east coast for discovering new insecticidal antibiotics was carried out through bioas-say of artemia salina and insect pest-Helicoverpa armigera. Totally 313 isolates were examined through bioassay of brine shrimp and 40 isolates (12. 08%) showed potential insecticidal activities. Of the 40 isolates, one isolate, designated as Streptomyces sp. 173, was found to have strong insecticidal activity against both brine shrimp and Helicoverpa armigera . This work indicated that marine microorganisms could be an important source of insecticidal antibiotics.更多还原